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Home >> Porsche >> 2016 >> Cayman GTS, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 73 (15 - Engine - Cylinder Head, Valve Control) >> WM 153619 Removing And Installing Chain TENSIONER On 4.8-Litre DFI Engines (Except Cayenne Tip, Cayenne Man, Cayenne Diesel) >> Removing Chain Tensioner

Removing Chain Tensioner

WARNING: This page is about a different car, the 2010 Porsche Cayenne, 2009 Porsche Cayenne, and 2008 Porsche Cayenne. However, it is still accessible from the selected car via links, so may be relevant.

Make sure the vehicle cannot start. To do this, switch off ignition and remove ignition key.

  1. Make room for removing the chain tensioner by loosening the wire harness.
    1. 1.1. Open the retaining clip -3-  (-arrow B-  ) and remove the B+ line -4-  (-arrow C-  ).
      Fig 1: Removing Generator Wire Harness
      G09409320Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  2. Disconnect plug connection for generator.
    1. 2.1. Release plug connection for the generator -1-  (-arrow A-  ) and disconnect it -arrow B-  .
    2. 2.2. Pull plug connection for the generator -1-  along with the line bracket off the B+ line -arrow C-  .
      Fig 2: Disconnecting Generator Plug Connection
      G09409321Courtesy of PORSCHE CARS NORTH AMERICA, INC.
      NOTE: Incorrect handling of crankshafts
      • Risk of damage to the timing system

      → Never turn the crankshaft against the rolling direction or when the chain tensioner is removed.

      → Proceed carefully with your work.

      → Only turn the engine at the crankshaft.

      → Reset the timing after working on the camshaft.

      → Observe general warning notes and working regulations.

      NOTE: Incorrect handling of crankshafts
      • Risk of damage to the timing system

      → Never turn the crankshaft against the rolling direction or when the chain tensioner is removed.

      → Proceed carefully with your work.

      → Only turn the engine at the crankshaft.

      → Reset the timing after working on the camshaft.

      → Observe general warning notes and working regulations.

      Information 

      • The chain tensioner can be removed in any timing chain position. 
      • The timing chain cannot by dislodged by removing the chain tensioner (screw securing timing chain in place). 
      • The crankshaft and camshafts must not be turned when the chain tensioner is removed  .
  3. Carefully unscrew the chain tensioner. -5-  The chain tensioner is made of aluminium. Check the thread for signs of damage. Clean the thread if there is slight abrasion. Replace sealing ring.
    Fig 3: Identifying Installation Position Of Timing-Case Cover Chain Tensioner
    G09409322Courtesy of PORSCHE CARS NORTH AMERICA, INC.